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Calculate the potential of the cell below. The absorbance of the solution of the solution in the Nickel cell is 0.347 in a 2 cm cell. (The molar absorptivity of Ni(en)2 (2+ charge) is 3,500, the fractional dissociation of en = 1.16 x 10^-4, kf=3.0 x 10^18 for Ni(en)2 (2+ charge)
Calculate the average atomic made of boron which has 2 isotopes. Boron-10 has an abundance of 19.9% and boron-11 has an abundance of 80.1%.
The reaction of 0.130 moles of a metal with an acidic aqueous solution in a calibrated calorimeter causes the temperature to increase by 49.0°C.
For the following reaction, 3.00 grams of chlorine gas are mixed with excess sodium iodide. The reaction yields 4.38 grams of sodium chloride.
compressed isothermally from 230 K and 150 kPa, and its entropy decreases by 15.0 J/K. Find the final pressure and DG for this process.
The first-order rate constant for the decomposition of N2O5, 2N2O5 --> 4NO2 + O2 at 70 degrees C is 6.82 * 10 ^-3 . Suppose we start with 2.90×10?2 of in a volume of 1.7 L. A)
concentrated hydrofluoric acid is 28.9M and has a density of 1.18g/mL. What is the weight percent of concentrated HF?
An aqueous solution containing 0.003 M NaCl and 0.005 M CaCl2 is mixed with the polysaccharide alginate to create a high-viscosity liquid that is a component of a wound dressing
Calculate the probability of finding an electron that is described by this wavefunction in a volume of 1.0 pm3 (i) centred on the nucleus.
Two of the isomers have C-C-C bond angles that deviate significantly from those predicted by VSEPR theory. On this basis, which isomer would you predict is the least stable one? the second least stable?
If the rate constant at 20 degrees CELSIUS IS 4.3(10^-5). How long would it take for 83% of the compound to decompose ? if the rate constant is 9.0(10^-4) at 55 degrees Celsius what will the activation energy be?
The molar heat capacity of ethane is represented in the temperature range 298 k to 400 k by the empirical expression C(p,m)/(J K-1 Mol-1) = 14.73 + 0.1272 (T/K). Calculate the standard enthalpy of formation of ethane at 350 K from its value at 298..
Enough of a monoprotic acid is dissolved in water to produce a 0.0193 M solution. The pH of the resulting solution is 6.31. Calculate the Ka for the acid.
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